package com.regiee.config;

import com.regiee.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.cbor.MappingJackson2CborHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class webMvcConfig extends WebMvcConfigurationSupport {
    //设置静态资源映射
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始静态资源映射");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }
    /*
    扩展MVC框架的消息转换器
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建新的消息转换器，作用是将Controller返回的结果转换格式，在MVC框架中已经配置了很多的默认消息转换器
        //消息转换器的作用就是将请求的数据和响应的数据进行格式转换
        MappingJackson2HttpMessageConverter messageConverter=new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将java对象转为Json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将该消息转换器对象追加到MVC框架的容器转换器集合中
        converters.add(0,messageConverter);
    }
}
